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Time-Dependent Prestress Losses in Historic Clay Brick Masonry Walls Seismically Strengthened Using Unbonded Posttensioning
Publisher: American Society of Civil Engineers
Abstract: Time-dependent prestress losses in historic unreinforced clay brick masonry (URM) walls strengthened using unbonded posttensioning were investigated, with a particular emphasis on masonry shortening resulting from creep ...
Using Recycled Concrete Aggregates in New Zealand Ready-Mix Concrete Production
Publisher: American Society of Civil Engineers
Abstract: Motivations for adopting recycled concrete as an aggregate source include the preservation of natural resources, effective utilization of a growing waste stream, and financial and energy savings. Although current New Zealand ...
Diagonal Compression Testing of FRP-Retrofitted Unreinforced Clay Brick Masonry Wallettes
Publisher: American Society of Civil Engineers
Abstract: To address concerns regarding the seismic vulnerability of New Zealand unreinforced masonry (URM) buildings, a research program was undertaken to investigate the effectiveness of fiber-reinforced polymer (FRP) systems as ...
Tendon Stress in Unbonded Posttensioned Masonry Walls at Nominal In-Plane Strength
Publisher: American Society of Civil Engineers
Abstract: Accurate estimation of stress in unbonded tendons at the nominal strength limit state is essential for calculating the in-plane flexural strength of posttensioned masonry walls. These walls gain their lateral strength and ...
Structural Testing of Large-Scale Posttensioned Concrete Masonry Walls
Publisher: American Society of Civil Engineers
Abstract: Two unbonded posttensioned concrete masonry (PCM) cantilever walls were subjected to in-plane pseudostatic simulated seismic loading in the Civil Test Hall at the University of Auckland, New Zealand. The 67% scale wall ...
Using DEM to Investigate Boundary Conditions for Rocking URM Facades Subjected to Earthquake Motion
Publisher: ASCE
Abstract: Façade overturning is a frequently observed collapse mechanism occurring in unreinforced masonry (URM) buildings during high-intensity, earthquake-induced shaking. Following complete separation from a building, the rocking ...
Tensile Properties of an Engineered Cementitious Composite Shotcrete Mix
Publisher: American Society of Civil Engineers
Abstract: Results are presented for a series of laboratory tests that were undertaken to characterize the tensile properties of an engineered cementitious composite (ECC) mix, which is a mortar-based composite reinforced with synthetic ...
Estimating Thrust Forces Resulting from Arching Action of Clay Brick Masonry Infill
Publisher: American Society of Civil Engineers
Compressive, Flexural Bond, and Shear Bond Strengths of In Situ New Zealand Unreinforced Clay Brick Masonry Constructed Using Lime Mortar between the 1880s and 1940s
Publisher: American Society of Civil Engineers
Abstract: The importance of sufficient masonry mortar joint-bond strength when a structure is subjected to in-plane and out-of-plane loads has been emphasized by several researchers. However, masonry unit/mortar bond strength is ...
Uniaxial Compressive Strength and Stiffness of Field-Extracted and Laboratory-Constructed Masonry Prisms
Publisher: American Society of Civil Engineers
Abstract: Masonry material characteristics such as compression stress-strain behavior and the relationships between brick, mortar, and masonry compressive strengths are required for the detailed analysis and assessment of masonry ...